2004-2007 Cadillac CTS-V Appearance Mods Discussion, HIDs in the fogs need a special ballast? in Cadillac CTS-V Series Forum - 2004 - 2007; Hey guys, I got some cheapo HID bulbs for the fogs, with the slim digital ballasts. While they both work.... ...

HIDs in the fogs need a special ballast?

Hey guys, I got some cheapo HID bulbs for the fogs, with the slim digital ballasts. While they both work.... generally only one will work at a time or neither.

Contacted the seller and they will give me a refund, but they say the V needs a Canbus Ballast that they guarantee to work which they also offer to sell ($30)

Any ideas if that is legit? The way the fog switch is on our cars makes me think their might be some tricky relays/switching going on within the car where it doesn't detect any bulbs, doesn't give the ballasts time to fire, etc.

Thanks for any input as I'm just guessing. I'd like to run these 3k bulbs.

Re: HIDs in the fogs need a special ballast?

I'm running the standard DDM 35w HID in the fogs and they require no special parts.... not sure what their reasoning would be for needing something special but they don't. have you checked to make sure all the connection are secure and in place?

You all remember that the foglamp wiring is reversed relative to normal, right? If your HIDs don't fire, flip the polarity.

???? Reversed ?? You have one power wire and one ground wire... On most hid kits I find you have to reverse the connectors. I don't think that's just a Cts v foglight issue.

On my first set of his foglights for my car they plugged and played just regularly plugging them in. The new 6000k set I just bought I had to reverse them. I don't believe it's the cars "foglight wiring is reversed relative to normal"

Re: HIDs in the fogs need a special ballast?

You all remember that the foglamp wiring is reversed relative to normal, right? If your HIDs don't fire, flip the polarity.

Originally Posted by stepchild21

???? Reversed ?? You have one power wire and one ground wire... On most hid kits I find you have to reverse the connectors. I don't think that's just a Cts v foglight issue.

On my first set of his foglights for my car they plugged and played just regularly plugging them in. The new 6000k set I just bought I had to reverse them. I don't believe it's the cars "foglight wiring is reversed relative to normal"

Yeah, I reversed them like most kits require, but no love. They work.... just only sometimes, and with some flickering. The seller said its common with the kits he sells to Caddy and BMW owners and is offering me some different ballasts, but he is also offering a full refund without having to ship them back, which is pretty cool. I think I might do that and order a set from DDM.

Do you guys use the slim digital ballasts or the full size sets for your fogs?